Granite Straight Edge

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Material: granite

Standard: JB/T 7878-1999

Specification: The maximum workability is 3000mm in length or customize

Hardness of the working surface: HS70

Surface treatment: ground finish

Precision grade: 00-0

Packaging: plywood box

Specification:

Technical specification of granite straight edge:

Specification(mm)	Flatness of working surface		parallelism between working surfaces		Verticality between side and working surface
	Precision grade (um)
	00	0	00	0	00	0
500×100×40	1.6	2.6	2.4	3.9	8.0	13.0
750×100×40	2.1	3.5	3.2	5.3	11.0	16.0
1000×120×40	3.0	5.0	4.5	7.5	15.0	25.0
1000×120×60	3.2	5.3	4.9	7.9	15.6	25.8
1200×120×60	3.69	6.2	5.4	8.5	16.4	26.5
1500×150×60	4.2	7.2	6.5	11.0	21.5	36.2
1600×150×80	4.4	7.4	6.6	11.1	22.0	37.0
2000×200×80	5.4	10.0	8.1	13.5	27.0	45.0
2500×200×80	6.0	14.3	10.2	13.8	35.0	69.6
3000×200×100	8.0	16.0	12.0	14.0	42.0	81.2